Anyone have answers to the Mass and Atoms Quick Check?

Answer 1

1. Which statement describes the quantities that can be found using the number of moles?
-It can be used to find the number of molecules, atoms, or ions.

2. A scientist uses 3 g of water (H2O) in an experiment. Which option describes the first step in calculating the number of molecules in 3 g of water?
-Identify the molar masses of H and O.

3. The molar mass of ammonia (NH3) is 17.03 g/mol. Which expression correctly shows how to determine the number of moles of ammonia equivalent to 5 g?
-5 g× 1mol/17.03

4. How many molecules of carbon dioxide (CO2) are there in 0.450 mol of carbon dioxide?
-2.71×10^23

5. When magnesium chloride (MgCl2) is dissolved in water, which statement must be true?
-The sum of the mass of the Mg2+ ions and the mass of the Cl- ions must be equal to the mass of MgCl2.

Answer 2

heyo ❄️ is correct Thanks a bunch!

Answer 3

Heyo is clutch

Answer 4

Excuse you

Answer 5

what does that mean?

Answer 6

He’s calling you a mean name….I think. Oh nvm

Answer 7

no it means he helped him while he was in a tight spot. its a good thing Marissa 😭😭😭

Answer 8

Can someone find the answers to Ecology Chemistry Unit Test
on pearson Please!? Please and thanks you soo much!!